Addison's Disease (Primary Adrenal Insufficiency)
Addison's disease is characterized by destruction or dysfunction of the adrenal cortex, leading to deficiencies in glucocorticoids (cortisol) and mineralocorticoids (aldosterone). Autoimmune adrenalitis is the most common cause in developed countries. Prompt diagnosis and lifelong hormone replacement prevent adrenal crisis and improve outcomes.
Symptoms
- Chronic fatigue, weakness, weight loss
- Hyperpigmentation (especially skin creases, scars, gums)
- Salt craving, hypotension, dizziness
- GI symptoms: nausea, vomiting, abdominal pain
- Mood changes, irritability, depression
- Hypoglycemia, hyponatremia, hyperkalemia
- Adrenal crisis: severe hypotension, shock, fever, altered mental status (medical emergency)
Causes
- Autoimmune adrenalitis (isolated or part of polyglandular autoimmune syndrome)
- Infections (tuberculosis, HIV, fungal)
- Adrenal hemorrhage or metastases
- Genetic disorders (adrenoleukodystrophy)
- Medications (ketoconazole, etomidate) affecting steroid synthesis
Diagnosis
- Morning cortisol < 3 µg/dL highly suggestive; >15 µg/dL makes AI unlikely
- ACTH stimulation test (cosyntropin) is gold standard
- Plasma ACTH elevated in primary AI; renin elevated, aldosterone low
- Autoantibody testing (21-hydroxylase) for autoimmune etiology
- Electrolytes show hyponatremia/hyperkalemia
- Imaging (CT) if infection, hemorrhage, metastasis suspected
Treatment & Management
Hormone Replacement
- Glucocorticoid: hydrocortisone (split doses), or prednisone/prednisolone for convenience
- Mineralocorticoid: fludrocortisone to maintain sodium/potassium and blood pressure
- DHEA replacement may benefit mood/libido in select patients
Sick-Day/Stress Dosing
- Double or triple glucocorticoid doses during illness, surgery, strenuous exercise
- Educate on early use of emergency hydrocortisone injection kits
- Wear medical alert ID; carry steroid card/injection everywhere
Lifestyle
- Regular meals with adequate sodium intake (unless hypertensive)
- Monitor BP, weight, electrolytes, symptoms
- Address comorbid autoimmune diseases (thyroid, type 1 diabetes, celiac disease)
- Vaccinations and infection prevention to reduce stress dosing events
Living with Addison's
- Keep a log of cortisol/fludrocortisone doses, symptoms, BP, labs
- Plan travel with extra medication, syringes, translation cards
- Build an emergency plan with family/coworkers trained in IM injection
- Engage in support groups—chronic steroid reliance can be isolating
Complications
- Adrenal crisis (life-threatening)
- Associated autoimmune diseases (thyroid, parathyroid, gonadal failure)
- Osteoporosis from chronic glucocorticoids (use lowest effective dose)
- Fatigue/mood disorders if under- or over-replaced
Research & Future Directions
Work focuses on immune tolerance induction, stem cell regeneration, sustained-release hydrocortisone, and digital cortisol dosing aids.
Experimental & Emerging Treatments
- Plenadrin/Chronocort: Modified-release hydrocortisone mimics circadian cortisol, improving metabolic outcomes.
- Immune Tolerance Therapies: Trials of ACTH analogs or antigen-specific immunotherapy aim to halt autoimmune destruction.
- Adrenal Organoids & Cell Therapy: Early-stage research explores transplanting adrenal progenitor cells.
- Smart Wearables & AI Dosing: Continuous symptom/BP tracking to automate cortisol titration.
Track Addison's Disease with Diagnoza.care
Stay Balanced 24/7 – Log medication doses, stress dosing events, BP, weight, electrolytes, illnesses, and comorbid autoimmune screenings; schedule endocrinology visits; capture side effects; and let the AI companion remind you of refills and travel planning.
Medical Disclaimer: Informational only. Work with your endocrinologist for ongoing monitoring, stress-dosing education, and management of associated autoimmune conditions.
Sources: Endocrine Society, American Association of Clinical Endocrinology, National Adrenal Diseases Foundation